[Bug rtl-optimization/106568] -freorder-blocks-algorithm appears to causes a crash in stable code, no way to disable it

[noloader at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106568

--- Comment #20 from Jeffrey Walton <noloader at gmail dot com> ---
Hi Andrew.

I went through the list of options that are enabled at -O2 from [1]. I built
the library with each option separately at "-DNDEBUG -g2 -O2 -fno-xxx".

Here is the list of suspects. I seem to recall having trouble with
-fdevirtualize in the past:

  -fno-devirtualize
  -fno-indirect-inlining
  -fno-devirtualize

Here are the full results:

Failed to execute with -fno-align-functions
Failed to execute with -fno-align-jumps
Failed to execute with -fno-align-labels
Failed to execute with -fno-align-loops
Failed to execute with -fno-caller-saves
Failed to execute with -fno-code-hoisting
Failed to execute with -fno-crossjumping
Failed to execute with -fno-cse-follow-jumps
Failed to execute with -fno-cse-skip-blocks
Failed to execute with -fno-delete-null-pointer-checks
Ok! Ok! Ok! Ok! Ok! -fno-devirtualize
Failed to execute with -fno-devirtualize-speculatively
Failed to execute with -fno-expensive-optimizations
Failed to execute with -fno-finite-loops
Failed to execute with -fno-gcse
Failed to execute with -fno-gcse-lm
Failed to execute with -fno-hoist-adjacent-loads
Failed to execute with -fno-inline-functions
Failed to execute with -fno-inline-small-functions
Ok! Ok! Ok! Ok! Ok! -fno-indirect-inlining
Failed to execute with -fno-ipa-bit-cp
Failed to execute with -fno-ipa-cp
Failed to execute with -fno-ipa-icf
Failed to execute with -fno-ipa-ra
Failed to execute with -fno-ipa-sra
Failed to execute with -fno-ipa-vrp
Failed to execute with -fno-isolate-erroneous-paths-dereference
Failed to execute with -fno-lra-remat
Failed to execute with -fno-optimize-sibling-calls
Failed to execute with -fno-optimize-strlen
Failed to execute with -fno-partial-inlining
Failed to execute with -fno-peephole2
Failed to build with -fno-reorder-blocks-algorithm=stc
Failed to execute with -fno-reorder-blocks-and-partition
Failed to execute with -fno-reorder-functions
Failed to execute with -fno-rerun-cse-after-loop
Failed to execute with -fno-schedule-insns
Failed to execute with -fno-schedule-insns2
Failed to execute with -fno-sched-interblock
Failed to execute with -fno-sched-spec
Failed to execute with -fno-store-merging
Ok! Ok! Ok! Ok! Ok! -fno-strict-aliasing
Failed to execute with -fno-thread-jumps
Failed to execute with -fno-tree-builtin-call-dce
Failed to execute with -fno-tree-loop-vectorize
Failed to execute with -fno-tree-pre
Ok! Ok! Ok! Ok! Ok! -fno-tree-slp-vectorize
Failed to execute with -fno-tree-switch-conversion
Failed to execute with -fno-tree-tail-merge
Failed to execute with -fno-tree-vrp
Failed to build with -fno-vect-cost-model=very-cheap

Attached is the script I used to repeatedly build the library.